Detachable fastener



April 18, 1933. KING DETACHABLE FAS TENER Filed April 18, 1932 INVENTOR 5' X 1 M M Anew Patented Apr. 18, 1933 UNI ED; STATES (GEORGE A. KING, or WATERBURY, CONNECTICUT, ASSIGNOR 'ro sCovILr. flfkN'G'FAGEUfi ING COMPANY, or WATER-BURY, CONNECTI UT, A CORPORATION or coNNnc'rren'r DETACHAIBLE FAST'ENER Application filed April 18, 1932. Serial No. 605,851.

This invention relates to improvements in detachable fasteners, and is particularly applicable to fasteners of the type used in adjustably securing together a pair of strap ends. One use which has commonly been made of fasteners of this character is to secure together a pair of short straps relied upon to tighten a glove about the wrist.

It is an object of the invention to provide 19 a fastener of the above-described character which may be adjusted to any position along the strap, held securely in any such adjusted position, and readily attached to and detached from a complementary fastener, the

entire device being cut and bent to its final form from a single piece of sheet metal.

In the accompanying drawing illustrating preferred forms of the invention Figure 1 is a face view of a fastener element embodying the invention in the form of a resilient snap fastener socket in its assembled relation with a strap.

Fig. 2 is a reverse view of the same fastener element, the portions represented in broken lines being parts of the blank from which the device is made before being bent to final form.

Fig. 3 is a longitudinal section through the fastener socket illustrated in Fig. 1, the section being taken along the line 3-3, a complementary stud element being indicated in broken lines.

Fig. 4: is a side View of the stud element of the fastener detached from the socket.

through the-fastener, the section being taken along the line 5-5 of Fig. 2, and the socket being represented as detached from the strap. Fig. 6 is a rear face view of a fastener element embodying the invention in modified form. the attaching element being a resilient stud rather than a socket.

Fig. 7 is a longitudinal sectional view of the fastener element illustrated in Fig. 6 the section being taken along the line 77,

and the device being represented in its assembled relations with a socket element and a pair of straps.

The form of the inventionillustrated by Figs. 1 to 5, inclusive, will first be described.

a strap 22, as best illustrated in Figs. 1 and 5 Fig. 5 is a longitudinal sectional view The fastener element 20, preferably of rectilinear form, may be provided with a pair' of slots 21 across its opposite. ends, through which may be threaded the, end of.

3, and suitable means may be provided where: bythe-device may be securelyheld in any desired position of adjustment along the strap,

as by striking up a series of spurs 23alo'n" one or more of the margins of the slotte g portions. 7 r 1 The detachable attaching element of the fastening device, which in'the form of the invention illustrated in Figsi' l'to 5 is a resilient socket element, may be formed by bending inwardly apair of oppositely-disposed portions 24;, provided for suchpurpose as a part of the blank from which the device is made, to the'positions indicated at 25 in Fig. 2. These portions 24 should be of such 7] length that when bent to their final forms the ends will be mutually adjacent 1 each other, and these adjacent ends may be provided with a pair of semi-circular recesses 26" which jointly form a circular socket i5 adapted to receive a complementary stud 27 (F 2 The stud 27 may be secured to a strap 28 in any appropriate manner, and" the two A straps 22,28 maybe readily connected and "so disconnected by-snapping the stud 27 into and removing it from the socket 29 formed by the 'semi-circular-recesses 26 in the-ends of the inturned portions of the device 25.

' When inserting the stud 27 in the socket 29 and when withdrawing it therefrom, the portions 25 of the device are forced slightly opposite directions, but, since theseinturned portlons are a'mere' continuat on of the face portion'ofthe fastener, the bendto ing of the material when "inserting and withdrawing the stud is distributed over such a large area of the metal that the'local strain at any particular part of the device is negligible. The resulting structure, therefore, isa-very simple and correspondingly cheap, but at the same time equally durable and satisfa'ctory, snap fastener element made entirely from V a single piece of stamped sheet metal. 109

If desired, the face portion of the fastener may be perforated as indicated at 30 (Fig. and the opening thus produced may be relied upon to provide clear space for the upper portion of the stud as indicated in Fig. 3. When made in this form the parts of the fastener may, if desired, be separated by a pressure of the thumb or finger against the surface of the strap overlying the stud, whereby it maybe forced out 'of its engagement with the socket. V

The form of the invention illustrated in Figs. 6 and 7 differs from that heretofore described in that the parts of the blank 24: are of shapes such that they may bepre'ssed to forms adapted to cooperate-witheach otherwhentheparts are bent: inwardly to the .-positions indicatedat 25 and produce a resjilient stu d element 29. The snap fasftener stud thus formed may be assembled Y with,a strap 22, and the stud may be de- -.and::an underlying-neck of a diameter less element serves as the stud.

tachably securedto a simple, rigid socket element 2; secured in any appropriate manien in 'a strap 28'.

Except for the substitution of the resilient stud element for the resilient socket element,

the fastener element illustrated in Figs. 6

and? mayfconform with the one illustrated in Figs. 1 to5, inclusive. I k

H The-invention is not intended to be limited to the Specific forms selected for purposes of illustration butfshould -be regarded as covering modifications'and variations thereofgwithin the scope of the appended claims.

. What is'claimedis:

- 1. A detachable "snap fastener comprising a stud element havingasQcket engaginghead and an underlying neck of a diameter less than that ofathe head and a socket element having a throat of a diameter less than that "ofithe head ofthe studbut great-"enough to receive its neck, one of said fastener elements comprising a single piece of metal having strap-receiving slots disposed along apair of opposite margins and portions turned and "extended inwardly from the intervening; margins and :provided with closely adj acent terminal portions of forms anddimensions such'as to serve as the means of at- ;ta'chment withthe attaching portion of; the

other fastener element and have direct but resilient engagement therewith.

2. A snap' fastener, as defined by claim 1,

'ofwhiclrthe adjacent ends. of the inturned portions of one of the fastener elements are irecessed to form the throatof a stud-receiving socket; and of "which the other fastener H" 3.; A detachable snap fastener comprising a stud element having a socket-engaging head vthan that; of thehead aii daone-piece socket filamen com i i a ing e p of m such as to freelyreceivebut very closely surhaving a, perforation therein of a diameter d'i'sposed slotted portions by means of which it may be adjusted to any desired position on a "strap.

In witness whereof,-I have hereuntosig-ned my name.

- GEORGE a. KING. 

